Module type metro heat recovery system and control method thereof

Abstract

The invention discloses a module type metro heat recovery system and a control method thereof. The module type metro heat recovery system comprises a plurality of water / air heat pump units arranged in a tunnel, a heat recovery water supply pipe and a heat recovery water return pipe, wherein the heat recovery water supply pipe and the heat recovery water return pipe are arranged in a rail top air channel. Each water / air heat pump unit is connected with the heat recovery water supply pipe through a corresponding first pipeline, and a second valve is installed on each first pipeline. Each water / air heat pump unit is further connected with the heat recovery water return pipe through a corresponding second pipeline, and a first valve available for being adjusted and closed is arranged on each second pipeline. A temperature sensor is arranged below the position between every two adjacent water / air heat pump units. Temperature sensors are also arranged on the outer sides of the two water / air heat pump units at the two ends of the heat recovery water return pipe correspondingly. According to the module type metro heat recovery system and the control method thereof, not only can heat in piston wind and heat exhausting wind be recovered, but also heat in soil of a zone around the metro tunnel can be effectively recovered, and the defect that existing metro heat recovery systems still cannot prevent a large amount of heat energy from being wasted is overcome.

Description

technical field [0001] The invention belongs to the technical field of subway heating, ventilation and air conditioning, and in particular relates to a modularized subway heat recovery system and a control method thereof. Background technique [0002] In the existing subway system, a large amount of waste heat in the tunnel in winter is directly discharged to the outside through the piston air or hot exhaust air, resulting in a large amount of energy waste. The recovery of waste heat in the tunnels of the metro system is necessary to avoid energy waste. In the existing subway heat recovery system, the heat recovery device is usually placed in the subway exhaust shaft to recover waste heat. However, this method can only recover the heat in the piston air or exhaust heat, and cannot recover the soil around the subway tunnel. The heat in the system still causes a large amount of waste heat to be wasted. Contents of the invention [0003] In view of the defects or deficienci...

AI Technical Summary

Problems solved by technology

[0003] In view of the defects or deficiencies of the above-mentioned prior art and the problem of energy waste in the existing subway system, the purpose of the present invention is to provide a modularized subway heat recovery system and its control method. By setting the system of the present invention to control, Convert low-grade waste heat into high-grade heat energy that can be directly used, avoiding waste heat waste in subway tunnels

Images